Add service name to catalog
Add service name to catalog

The service catalog can contain names for the services. These names can
be filtered on by other clients and are going to be required if we
expect to use the keystoneclient service catalog in other clients.

Change-Id: Iab69d67427ed40ce2f556f9a6348f4f1d9c26b5b

citrix-openstack-build/keystoneauth,sileht/keystoneauth,jamielennox/keystoneauth